Downloaded from Class 12... · Q12. Give an example of Fibrous Protein . ANS: Keratin . Q13.Give...

Q3.Lower alcohols are soluble in water but higher alcohols are not soluble . Why?

Ans: Due to large Hydrocarbon part which hydrophobic.

Q4. Why ether is insoluble in water ?

Ans: Due to absence of HB.

Q5. How is alcohol made unfit for drinking purposes ?

Ans: By adding CH3OH , CuSO4 and Pyridine

Q6. Phenol is an acid but does not react with NaHCO3. Why?

Ans: Since Phenol feebly weak in nature.

Q7.Diethylether does not react with Na.Why ?

Ans: Due to absence of acidic Hydrogen (Active).

Q8.Propanol has higher B.P. than that of n-Butane. Why?

Ans : In propanol there is HBonding but in n-Butane there is no HBonding.

Q9. Mixture of o- &p-Nitrophenol is separated by Steam volatile . Why ?

Ans: Due to intramolecular HB in O-Nitrophenol.

Q10. Out ofo- &p-Nitrophenol which one is more volatile ?

Ans:O-Nitrophenol due to intramolecular HB.

Q11. IUPAC Name of Dimethylether is –

Ans: Methoxymethane

Q12.IUPAC Name of Isobutyl alcohol is—

Ans: 2-Methylpropanol

Q13.What is anisol ?

Ans: Methyl phenyl ether

Q14. Give an example of 3o alcohol.

Ans: Dimethylethanol

Q15.What is phenetol ?

Alcohols And Phenols

Q1. What is absolute alcohol ?

Ans: 100% C2H5OH is known as absolute alcohol.

Q2. What is rectified spirit ?

Ans:95% C2H5OH is known as rectified spirit.

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Ans :Ethylphenyl ether(C6H5-O-C2H5)

Q16.Phenol gives litmus test but not alcohol. Why?

Ans:

S.N. Compounds

Phenol Alcohol

1. More Acidic due to –I effect Less Acidic due

to +I effect

Q17.What is Lucas Reagent ?

Ans: Anhydrous Zinc Chloride +Conc.HCl

Q18.Dimethyl ether is more volatile than ethanol . Why?

Ans: Due to absence of HB.

Q19.Which product will obtain by dehydration of ethanol ?

Ans: Ethene.

Q20. Out of But-2-en-1-ol and 2-Butanol which one shows Cis&Trans isomerism ?

Ans:But-2-en-1-ol will show Cis&Trans isomerism .

By Tinsukia Region

CHAPTER 12 1 Marks Questions

Q1. Write IUPAC Name of Acetone . Ans: Propanone Q2.Draw the structure of –Isobutyraldehyde. Ans: CH3-CH(CH3)-CH2-CHO Q3.Write the IUPAC Name of Caproic Acid. Ans: Hexanoic Acid. Q4.What is Fehling’s Solution ‘A’? Ans: Aqueous solution of CuSO4.

Q5.What is the Tollen’s Reagent? Ans: Ammonical Silver Nitrate Solution .



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Q6.Arrange the following compounds in the increasing order of their B.P. CH3CHO,CH3CH2OH,CH3OCH3,CH3CH2CH3 Ans:CH3CH2CH3<CH3OCH3<CH3CHO<CH3CH2OH Q7. Arrange the following compounds in the increasing order of their reactivity in nucleophilic Addition reaction- Ethanal,Propanal,Propanone,Butanone Ans: Butanone<Propanone<Propanal<Ethanal Q8. Write the structure of 3-Hydroxy butanal. Ans:CH3-CH(OH)-CH3-CHO Q9. B.P. of ketone&aldehyde is higher than that of hydrocarbons of comparable molecular mass why? Ans: Due to dipole-dipole interaction in carbonyl compounds. Q10. What is formalin ? Ans: 40% aqueous solution of HCHO. Q11.What is Vinegar? Ans: 8% solution of acetic acid. Q12. Formic Acid is more acidic than acetic acid why? Ans: Due to +I effect in acetic acid Q13. What is Per-Fluoro acetic acid? Ans: CF3COOH Q14.Acidic nature of carboxylic acid is higher than Phenol Why? Ans : Carboxylate ions are more stable than Phenoxide ions . Q15. Out of Propionaldehyde and Acetone , which more reactive ? Ans: Acetone Q16. What is Schiff’s base ? Ans: RCH=NR’ Q17.Out of CH3CHO&HCHO which compound will give aldol condensation ? Ans: CH3CHO Q18. Out of CH3CHO&HCHO which compound will give Cannizzaro’s Reaction ? Ans: HCHO Q19.Write oxidation product of Propanol. Ans: Propanoic Acid Q20. What is PCC? Ans: PyridiniumChloroChromate

CHAPTER 13

1MARKS QUESTIONS Q1. Give an example tertiary amine . Ans: Trimethyl amine Q2. Write the IUPAC Name of ethyl amine Ans: Ethanamine Q3. Which amine is more basic CH3NH2or(CH3)3N in Gaseous Phase ? Ans: (CH3)3N Q4. What is the Zwitterion ?



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Ans: Dipolar ion Q4.Give an example of Zwitter ion. Ans: H3N+-CH2-COO- Q5. Write the IUPAC Name of CH2=CHCN. Ans: Pro-2-enenitrile Q6.Give one important use of Phenyl isocyanide . Ans : As insecticide Q7. B.P. of 1o Amine is higher than that of secondary amine of comparable molecular mass why? Ans: Due to more Number of HB. Q8. Ethyl amine is soluble in water but Aniline does not why? Ans: Due to HB in Ethyl amine Q9. Which amine gives Carbyl amine test ? Ans: Primary(1o) Amine Q10. Write the IUPAC Name of (CH3)3N. Ans: N,N-Dimethylmethanamine Q11.Arrange the following in the decreasing order of basic strength. C6H5NH2 ,(C2H5)2NH,C2H5NH2,NH3 Ans:(C2H5)2NH>C2H5NH2>NH3>C6H5NH2 Q12. Aniline is less basic than ammonia why? Ans: Due to +R effect in Aniline Q13. Why are aliphatic amines stronger bases than aromatic amines ? Ans: There is +I effect in aliphatic amines and –I effect in aromatic amines. Q14.Write the IUPAC Name of --

Ans: 2-Methylaniline Q15. Which is more basic triethyl amine or Diethyl amine in Gaseous state ? Ans:Diethyl amine Q16. Which of followings have higher Kb , H2O or NH3? Ans: NH3

Q17.Write the structure of Benzenediazonium chloride. Ans:

Q18. What is Hinsberg’sReagent ?



Ans: Bezenesulphonyl Chloride (C6H5SO2Cl)

Ans:CH3NH2

Q20. Write the structure of p- Amino azobenzene.

Ans:

CHAPTER 14 1 MARK QUESTION

Q1. What is invert sugar ? Ans: Mixture of glucose & Fructose Q2. Which disaccharide is present in milk ? Ans: Lactose Q3. Which Polysaccharide is present in Rice ? Ans: Starch Q4. Write hydrolysis product of Lactose. Ans: Glucose &Galactose Q5. Name the carbohydrate which is not digested in human body ? Ans; Cellulose Q6. Which Functional groups are present in glucose ? Ans : -OH & CHO Q7. What are the constituents of Maltose ? Ans: 2 Units of α-D-glucose Q8.What are the constituents of Starch ? Ans: Amylose & Amylopectin Q9. Which Polysaccharide is stored in the Liver of Animals ? Ans: Glycogen Q10.Name two Carbohydrades which act as byfuels? Ans: Starch & Glycogen Q11. Write the water soluble vitamins . Ans: Vitamin B & Vitamin C



Q12. Give an example of Fibrous Protein . ANS: Keratin Q13.Give two examples of essential amino acids . Ans: Valine&Lycine Q14. Name the Enzymes present in the saliva of Human. Ansd: Amylase Q15. What is Glycogen ? Ans: Polysaccharide Q16. What type of bonding occurs in globular Proteins ? Ans: Van der Waal’s interaction , Dipolar interaction , HB. Q17 Which bio-molecules act as catalyst ? Ans: Enzyme Q18.Name the enzyme which breaks proteins into peptides ? Ans: Pepsin & Trypsin Q19.Name the purines present in DNA > Ans: Adenine and Guanine Q20 Name the base that is found in RNA only . Ans: Uracil

CHAPTER 15

1 MARK QUESTIONS Q1. Write the monomers of Bakelite. Ans: Phenol & Formaldehyde Q2. Give the chemical name of Tefflon. Ans: PTFE Q3. What is the main constituent of Babalgum ? Ans: Butadiene &Sytrene Q4.Name a synthetic polymer which is an amide ? Ans: Nylon-66 Q5. Name a polymer used to make cups for hot drinks? Ans: Urea formaldehyde resin Q6.Name one thermosetting & one thermoplastic polymer> Ans: PVC & Bakelite Q7 Name a synthetic polymer which is an ester. Ans: Terrylene Q8. Give an example of Step –Growth Polymer . Ans: Terrylene Q9. Write the monomers of Neoprene Ans: Chloroprene Q10 Write monmers of Nylon-66 Ans; Hexamethylenediamine&Adipic acid Q11. Write the Full form of PMMA. Ans: PolyMethylMethAcrylate



Q12. What is the volcanisation ? Ans: Heating of natural rubber with sulphur . Q13.What is PHBV? Ans: Poly-β-hydroxybutyrate-Co-β-hydroxyvalerate Q14. Give an example of Bio-degradable polymer ? Ans: PHBV Q15. What do you hy Buna-S ? Ans: Butadiene & Styrene Q16.Arrange the following Polymers in increasing order of intermolecular force. Nylon-66,Buna-S,Polythene Ans:Buna-S<Polythene<Nylon-66 Q17.Name a polymer used in non-stick utensils. Ans: Tefflon Q18. What do you understand for 6&6 in Nylon -66 ? Ans: Both 6 shows number of carbon atoms in monomers. Q19.What do you mean by Bu- , na& N in Buna-N. Ans: Bu-Butadiene ,na-Sodium (Na) and N- Acrylonitrile Q20. Write the monomers of Melamin Formaldehyde Resin. Ans: Melamin& Formaldehyde

CHAPTER 16 1MARK QUESTIONS

Q1.Name two types of chemical messangers. Ans: Neurotransmitters & Hormones Q2. Name the antibiotic used in typhoid fever. Ans:Chloramphenicol Q3.Name a Broad spectrum Antibiotic. Ans;Chloramphenicol Q4. Name the Medicine which can act as analgesic as well as antipyretic ., Ans: Aspirin Q5. Name the constituents of Dettol. Ans; Chlroxylenol&terpineol Q6. Why is Ethanal added to Soap ? Ans: To make it transparent Q7. Name an ant acid which prevent the formation of acid in the stomach. Ans : Ranitidine Q8. Why is glycerol is added to shaving soap? Ans: To prevent rapid drying. Q9. Give an example of bacteriocidal antibiotic. Ans: Penicillin Q10.Name a drug used in mental depression . Ans: Equanil Q11. Name a few artificial sweatners Ans: Saccharin & Aspartame Q12. What type drugh is phenacetine?



Ans: Antibiotic Q13.What are pathogens? Ans; Disease causing organisms. Q14.Name two Narcotics which are used as analgesics > Ans: Morphine & Codeine Q15. What is Chemotherapy? Ans: Use of chemical for treatment of disease . Q16. Mention a few drug targets . Ans: Carbohydratyes, Lipids , Proteins & Nucleic Acids . Q17. Define a Tanquilizer. Ans: Drug which act on CNS to help in reducing anxiety. Q18.Define Soap . Ans: Soap is a Sodium or Potassium salt of Fatty Acids Q19.Why are detergents preferred over soaps ? Ans: Unlike soaps detergents can be used even in hard water. Q20.What is a Bacteriostatic drug ? Ans: A drug which inhibit the growth of disease causing organisms.



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